JPH0541333Y2 - - Google Patents

Description

[Detailed explanation of the invention] a. Purpose of the invention (industrial application field) The invention is a refrigerator that is partitioned into multiple compartments in a refrigerated vehicle, and the refrigeration temperature of each compartment can be adjusted independently. It is an idea that can be used as a multi-chamber refrigerator that can maintain the appropriate refrigeration temperature for cargo such as fresh food and products in each compartment.

(Conventional technology) When transporting cargo that requires refrigeration, such as fresh foods such as seafood and vegetables, and dairy products, from the production area to the consumption area, these cargoes must be transported refrigerated to maintain freshness. . The refrigeration temperature at this time is
Although this differs depending on the cargo, it is often more convenient to load cargo that needs to be refrigerated at different refrigeration temperatures into the same refrigerated vehicle and transport them all at once.

In this way, when transporting cargo to be refrigerated at different refrigeration temperatures all at once, a refrigerated vehicle is used which has a plurality of refrigerated compartments separated by partition walls. A conventional refrigerator divided into a plurality of refrigerator compartments was constructed as shown in FIGS. 3 and 4. Third
The figure is a vertical side view, and FIG. 4 is a cross-sectional view taken along line bb in FIG. 3.

As shown in FIG. 3, a cooler 2 that blows cold air into the refrigerator 1 is attached to the upper front (driver's cab side) of the refrigerator 1, which is surrounded by a heat insulating material and can be sealed. This cooler 2 includes a compressor that is driven by a dedicated engine to compress refrigerant, a condenser that liquefies this refrigerant, and evaporates the liquefied refrigerant.
It is equipped with an evaporator that lowers the temperature and a fan that cools the evaporator by passing air through it.
Air inside the refrigerator is sucked in, cooled by passing through the evaporator, and then blown into the refrigerator again.

Further, as shown in FIG. 3, the inside of the refrigerator 1 is divided into a plurality of chambers (in the example of FIG. 3, there are three chambers, starting from the driver's cab side by partition walls 10, 10). Each partition wall 10 is divided into three chambers (C), and the upper part of each partition wall 10 is provided with a vent 3a provided with a suction fan 8, and the lower part is provided with a vent 3b without a fan.

The cold air blown out from the cooler 2 first enters the first chamber A, circulates within the room, and lowers the temperature of the first chamber A. In addition, some of the cold air in the first chamber A is removed by the suction fan 8.
It enters the second chamber B through the ventilation hole 3a at the top of the partition wall, and cools the second chamber B. Similarly, the cold air in the second chamber B is drawn by another suction fan 8, enters the third chamber C through the vent 3a, and cools the third chamber C.

In this way, the cold air moves sequentially from the first chamber A to the second chamber B and third chamber C, so it is inevitable that the temperature of each chamber gradually increases as it goes to the third chamber. The cold air that has cooled each of the first to third chambers A, B, and C is drawn by the cooler 2 and moves from the vents 3b and 3b of the partition walls 10 and 10 to the first chamber, and from the air inlet of the cooler 2. It is sucked in, cooled again, and blown into the first chamber A.

Cargo can be taken in and out of each of the first to third chambers A, B, and C by opening the door provided on the side of each chamber, or by opening the door provided at the rear of the third chamber C and moving the cargo through the bulkhead 10.
(In this case, install a small door on the bulkhead or make the bulkhead itself movable.)

Conventional dual compartment refrigerators in refrigerated cars are constructed and function as described above, so that the first compartment A is used to transport cargo that needs to be refrigerated at the lowest temperature, the second compartment B is used to transport cargo that needs to be refrigerated at an intermediate temperature, and the third compartment C is used to transport cargo that needs to be refrigerated at a relatively high temperature.

(Problems to be Solved by the Invention) However, the conventional multi-chamber refrigerator of a refrigerated vehicle constructed and operated as described above has the following disadvantages.

In other words, in long-distance transportation, previously loaded cargo is unloaded at a point on the way from the departure point to the final destination.
In some cases, the cargo is loaded with new cargo and transported to its final destination.

In such a case, there is no problem if the refrigeration temperature of the unloaded cargo and the newly loaded cargo is the same, but for example, if the cargo loaded in the third compartment C is suitable for refrigeration at a relatively high temperature, In cases where it is necessary to unload cargo and load new cargo that requires refrigeration at a high altitude, it is possible to make the third compartment C sufficiently cold by increasing the amount of cold air blown from cooler 2. However, at the same time, the temperature of the second compartment B becomes lower than that of the third compartment C, and there is a fear that the cargo loaded in the second compartment may be damaged due to overcooling. For this reason, there has been a strong desire to develop a multi-chamber refrigerator in which the temperatures of the first to third compartments A, B, and C can be adjusted independently.

b. Composition of the invention (means for solving the problem) The invention is a refrigerated vehicle that is divided into three or more chambers by partition walls, and the cold air from the cooler is blown into the first chamber near the driver's cab. In a refrigerator, there is a vent in the upper part of the refrigerator that passes through the partition wall to the second and subsequent compartments adjacent to the first compartment, and has multiple shutter openings on the side that can be adjusted to open to each compartment. A discharge duct is provided that opens into the first chamber, and at the bottom of the refrigerator, a vent with a shutter that can be adjusted to multiple opening degrees is provided on the side, and an intake duct that leads to the second and subsequent chambers is installed. A push fan is installed at the entrance of the discharge duct to forcefully send cold air discharged from the cooler into the duct. The above-mentioned disadvantages are solved by providing a multi-chamber refrigerator for a refrigerated vehicle, which is equipped with a temperature sensor that starts and stops a push-in fan as the temperature rises or falls below a predetermined value.

(Function) In the multi-chamber refrigerator of the present invention configured as described above, the cold air immediately after being blown out from the cooler into the first chamber is introduced into the discharge duct by the push-in fan, and further this cold air is It is sent into the second and third chambers through the opening of the shutter provided on the side of the discharge duct, thereby lowering the temperature of each chamber.

If you adjust the opening of the shutters in each room in advance,
The amount of cold air blown into each chamber can be adjusted so that each chamber has a different temperature. Furthermore, by adjusting the temperature sensor 9 installed in each room,
By controlling the start and stop of the push-in fan according to the rise and fall of the room temperature, the amount of cold air flowing into each room can be adjusted to maintain the temperature of each room at a predetermined value. The ratio of the amount of cold air flowing into each chamber below the second chamber is controlled by the opening degree of the shutter 6.
When the fan 7 is rotated, the ratio of the amount of cold air flowing into each chamber B and C can be made constant, and the temperature of each chamber can be maintained at a predetermined value.

The cold air sent into each chamber cools each chamber, enters the suction duct, is sucked into the cooler, is cooled again, and is discharged.

In this way, the temperature of each chamber of the multi-room refrigerator can be controlled independently.

If the refrigerator is divided into four or more rooms, the temperature of the room can be adjusted by adjusting the opening degree of the shutters 6, 6, but by increasing the number of discharge ducts 4a, 4b, it is possible to divide the refrigerator into areas other than both corners of the ceiling. A duct may also be provided.

(Example) Next, the present invention will be explained in more detail with reference to the illustrated example. Portions equivalent to those of the prior art example described above are indicated by the same reference numerals, and description thereof will be omitted. In this embodiment, two sets of discharge ducts and suction ducts are provided, a second chamber B and a third chamber C.
It is designed to cool down to a set temperature. If each set of ducts is dedicated to one room B or C, there is no need for ventilation to other rooms, but it is necessary to install a shutter for each room so that ventilation can flow to both rooms. Yes, it is closed when not in use.

FIG. 1 is a vertical side view of a multi-chamber refrigerator for a refrigerated car according to the present invention, and FIG. 2 is a cross-sectional view taken along line a-a in FIG.

As shown in FIG. 2, the refrigerator 1 surrounded by a heat insulating material is provided with discharge ducts 4a and 4b at both upper corners and suction ducts 5a and 5b at both lower corners. Furthermore, as shown in FIG. 1, vents with shutters 6, 6 are provided on the sides of the discharge ducts 4a, 4b and suction ducts 5a, 5b, and vents with shutters 6, 6 are provided in the openings of the discharge ducts 4a, 4b on the driver's cab side. Push-in fans 7, 7 are provided.

Partition walls 10, 1 that divide this refrigerator 1 into multiple rooms
0 may be provided in a fixed position or may be provided movably in the length direction of the refrigerator 1.

Temperature sensors 9, 9 are provided in the second chamber B and the third chamber C. The push-in fans 7, 7 provided in the discharge ducts 4a, 4b are linked to the temperature sensors 9, 9, and when the indoor temperature becomes higher than the set temperature, the fans 7, 7 are turned on.
The fan rotates and stops when the temperature drops below the set temperature.

In this multi-room refrigerator, cold air is continuously discharged from the cooler 2 to the first chamber A to maintain the first chamber A at the lowest temperature.

A portion of the cool air sent to the first chamber is forced into the discharge ducts 4a, 4b by the fans 7, 7.

To send cold air into the second chamber B, the shutter 6 in the second chamber B of one discharge duct 4a and the shutter 6 in the lower suction duct 5b on the opposite side are opened. The shutters in the third chambers C of the ducts 4a and 5b are kept closed. As a result, the appropriate amount of cool air introduced into the discharge duct 4a flows diagonally through the second chamber B, adjusted by the shutter 6, and then passes through the suction duct 5b.
and cool the second chamber.

To cool the third chamber C, the shutter 6 of the discharge duct 4b and the shutter 6 of the suction duct 5a in the third chamber are opened to flow an appropriate amount of cold air across the third chamber. The shutters in the second chambers B of the ducts 4b and 5a are kept closed.

By operating in this way, the low-temperature cold air sucked from the first chamber A can be directly flowed into the second chamber B and the third chamber C, regardless of the other chambers.

When the temperature of each room B or C falls below the set temperature,
A fan 7 sending cold air to the room is stopped based on the output signal of a temperature sensor 9 provided in the room, and when the temperature rises, the fan is rotated again.

c. Effects of the invention Since the multi-chamber refrigerator of the refrigerated car of the present invention is constructed and operates as described above, each compartment can be independently maintained at a set temperature suitable for the cargo, and the cargo can be refrigerated well.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional side view schematically showing an embodiment of the multi-chamber refrigerator of the present invention, FIG. 2 is a sectional view taken along line a-a in FIG. 1,
FIG. 3 is a longitudinal side view showing an outline of a conventional multi-room refrigerator, and FIG. 4 is a sectional view taken along line bb in FIG. 3. A...First room, B...Second room, C...Third room,
1...Refrigerator, 2...Cooler, 3a, 3b...Vent, 4a, 4b...Discharge duct, 5a, 5b...
... Suction duct, 6 ... Shutter, 7 ... Push fan, 8 ... Suction fan, 9 ... Temperature sensor,
10... Bulkhead.

Claims (1)

[Scope of utility model registration request] In a refrigerator of a refrigerated car, which is divided into three or more chambers by partition walls, and the cold air from the cooler is blown into the first chamber near the driver's cabin, the refrigerator is located at the top of the refrigerator and adjacent to the first chamber in sequence. A discharge duct with a shutter opening on the side that communicates with each chamber below the second chamber through the partition wall and which can be adjusted to multiple opening degrees to each chamber is opened into the first chamber. At the bottom, there is a vent with a shutter that can adjust multiple opening degrees on the side, and an intake duct that opens into the first chamber and leads to the second chamber and the following chambers, and an inlet of the discharge duct. A forced fan is installed to forcefully send cold air discharged from the cooler into the duct, and the forced fan is started and stopped in each room from the second room onwards as the temperature of that room rises or falls below a predetermined value. A multi-chamber refrigerator in a refrigerated vehicle equipped with a temperature sensor.